Molecular Crystals and Liquid Crystals, Vol.444, 23-31, 2006
Surface functionalization of silica particles with phthalocyanine
Phthalocyanine moieties have been introduced onto mesoporous sphere-shaped silica particles prepared by the controlled hydrolysis of tetraethyl orthosilicate followed by surface modification with 3-aminopropylsilane by sol-gel process. Particles from sol-gel process were of size ranging from 190 to 500 nm. The surface modification reaction with amino groups was accomplished with a content of 1.2 mmol/g. Salt linkage was successfully formed between amino group on the silica surface and sulfonate group in phthalocyanine moieties by investigation of energy dispersive spectroscopy.